lto:[email protected]]
> Sent: Thursday, December 22, 2016 12:15 AM
> To: [email protected]
> Cc: [email protected]
> Subject: Re: [Ryu-devel] Trouble parsing DHCP packets
>
> Hi,
>
> I am thinking of creating a patch using your source code.
>
> I have a question for
[email protected]]
Sent: Thursday, December 22, 2016 12:15 AM
To: [email protected]
Cc: [email protected]
Subject: Re: [Ryu-devel] Trouble parsing DHCP packets
Hi,
I am thinking of creating a patch using your source code.
I have a question for your source code.
The size of "
Hi,
I am thinking of creating a patch using your source code.
I have a question for your source code.
The size of "sname" and "file" are defined by RFC 2131.
("sname" size is 64 bytes, "file" size is 128 bytes)
In your source code there are cases where "sname" is 40 bytes and "file"
does not e
To make this work, I had to modify Ryu's dhcp.py file. I just placed my
solution on stackoverflow, and I'm placing the complete file on
https://github.com/Ryuretic/RyureticLabs/tree/master/ryu/ryu/app/Ryuretic/Su
pport_Files shortly. Folks should be able to save their current dhcp.py file
as a back
Thanks Benny for checking back with me! I haven't actually been able to
test it yet, I've been out of town and now dealing with other higher
priority issues. I'll definitely let you know once I get back to it though.
Thanks,
Jeff
On Tue Oct 28 2014 at 8:10:13 PM Benjamin Eggerstedt <
benjamin.eg
Hi Jeff,
I hope you're doing fine and the issue is already resolved.
I'd really like to know if it was what we expected, or something else ...
Meanwhile I used the time to dig into the Ryu Framework a little more ...
In my "virtual lab" (Mininet VM (vBox) + Ryu-GitHub) I found that there is
an i
On Sun, 26 Oct 2014 20:26:38 +0900 (JST)
FUJITA Tomonori wrote:
> On Thu, 23 Oct 2014 14:23:27 -0400
> Jeff Rasley wrote:
>
>> More specifically I am getting an "error: 'unpack_from requires a buffer of
>> at least 233 bytes'" error from the unpack call on 185 (my buffer appears
>> to be 91 byt
On Thu, 23 Oct 2014 14:23:27 -0400
Jeff Rasley wrote:
> More specifically I am getting an "error: 'unpack_from requires a buffer of
> at least 233 bytes'" error from the unpack call on 185 (my buffer appears
> to be 91 bytes long). Which makes me think that the unpack string is not
> representati
If you have the rule that exports default actions=CONTROLLER , try
actions=CONTROLLER:1024 so that 1024 bytes of DHCP packet goes as
Packet-IN. It could be sending truncated packets as Packet-IN, I think 255
bytes is the default.
Nitin Sharma
On Thu, Oct 23, 2014 at 2:23 PM, Jeff Rasley wrote:
Wonderful, thanks Benny. I'll have to look into this further but this
definitely sounds similar to the issues I am dealing with.
Jeff
On Thu, Oct 23, 2014 at 3:28 PM, Benjamin Eggerstedt <
[email protected]> wrote:
> Hi Jeff,
>
> When I read your first mail I immediately felt reminde
Hi Jeff,
When I read your first mail I immediately felt reminded on the issue I'm
currently working on. If you create a tcpdump -s 0 -lnni ethX capture on
the device running Ryu, I'm almost certain that the DHCP DISCOVER in
question will show up as "Truncated" with regards to the "DATA" portion
(c
More specifically I am getting an "error: 'unpack_from requires a buffer of
at least 233 bytes'" error from the unpack call on 185 (my buffer appears
to be 91 bytes long). Which makes me think that the unpack string is not
representative of my DHCP Discover packet.
On Thu, Oct 23, 2014 at 2:19 PM,
Sorry Benny, I should have went into more detail in my previous email. I
have definitely been using the library you pointed to however it is not
actually parsing my DHCP Discover packets correctly.
Here's a sample of some code I have reduced my problem down to:
https://gist.github.com/jeffra/aa6cf
Hi Jeff,
Looking at https://github.com/osrg/ryu/blob/master/ryu/lib/packet/dhcp.py
I'd say "yes" :)
Benny
On Thu, Oct 23, 2014 at 7:22 PM, Jeff Rasley wrote:
> I seem to be having trouble parsing DHCP Discover packets in Ryu. I see
> there is a test for DHCP Offer messages
> in ryu/tests/unit/
I seem to be having trouble parsing DHCP Discover packets in Ryu. I see
there is a test for DHCP Offer messages
in ryu/tests/unit/packet/test_dhcp.py. Has DHCP Discover parsing been
implemented?
Thanks,
Jeff Rasley
http://cs.brown.edu/~jeffra
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